Denial of service in Microsoft SQL Server

1) Input validation error

EUVDB-ID: #VU81827

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-36728

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in Microsoft SQL Server. A local user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft SQL Server: before 2022 GDR 16.0.1105.1

OLE DB Driver: before 19.3.0002.0

Microsoft ODBC Driver for SQL Server on Linux: before 18.3.2.1

Microsoft ODBC Driver for SQL Server on macOS: before 18.3.2.1

Microsoft ODBC Driver for SQL Server on Windows: before 18.6.0007.0

External links

http://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36728

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.